722results about How to "Improve heat exchange capacity" patented technology

This invention provides a thermal energy battery having an insulated tank contains a multitude of densely packed plastic tubes filled with a phase-change material (PCM, such as ice) that changes from solid to liquid and vice-versa. Energy is stored when the PCM transitions from liquid to solid form, and released when the PCM transitions back from solid to liquid form. The tubes are arranged vertically, span the height of a well-insulated tank, and are immersed in heat transfer fluid (HTF) contained within the tank. The HTF is an aqueous solution with a freezing point temperature below the freezing point temperature of the chosen PCM. The HTF remains in liquid form at all times during the operation of the battery. Diffusers located allow the HTF to be extracted uniformly from the tank, pumped and cooled by a liquid chiller situated outside the tank and then and inserted back into the tank.

The invention relates to an inner screw heat transmission pipe, belonging to the heat transmission element. The invention is purposed to realize high heat transmission efficiency in condensation and high heat transmission efficiency in evaporation. The invention comprises: the inner surface of said pipe has screw teeth whose sections are in Y-shape and the nearby two teeth have an open chamber; the heights of two side wall of tooth are different or same while the biggest width between nearby two chambers is bigger than the width of chamber; the screw angle beta of screw tooth ranges between 0-30 degrees; The number of screw teeth of inner surface ranges from 30-200; and the width between nearby chamber opens ranges from 0.01-0.25mm. The invention can apply cold-warm indoor air conditioner.

To provide a heat pump water heater outdoor unit and heat pump water heater capable of preventing reduction in heating / hot water supply ability even at a low ambient temperature. A heat pump water heater outdoor unit, in which a compressor, a water heat exchanger, a first expansion valve, and an air heat exchanger are connected with piping, includes a first internal heat exchanger provided between the water heat exchanger and the first expansion valve and used for heat exchange between a refrigerant flowing between the water heat exchanger and the first expansion valve and a refrigerant flowing between the air heat exchanger and the compressor, an injection circuit branching off at a point between the first internal heat exchanger and the first expansion valve and to inject the refrigerant into the compressor through a second expansion valve; and a second internal heat exchanger for heat exchange between the refrigerant flowing between the first internal heat exchanger and the first expansion valve and the refrigerant flowing between the second expansion valve and the compressor in the injection circuit.

The invention discloses an ultra-high strength steel plate thermal die cutting and forming die, comprising an upper die seat and a convex die which is fixed on the upper die seat, a lower die seat and a concave die that is fixed on the lower die seat; the concave die is internally provided with a cooling water passage which is connected with a cooling water circulation system. More particularly, the concave die is compose of a trough-shaped concave die seat and a cavity body; the concave die seat is provided with a water inlet and a water outlet; the cavity body is arranged in the concave trough of the concave die seat; a gap is arranged between the cavity body and the concave die seat; the gap is communicated with the water inlet and the water outlet. The die improves cooling speed, ensures the uniformity of cooling, has simple and practical structure, and fast cools the die and the punching parts in the die by the water cooling system of the die, so as to achieve the effect of quenching. As the process is completed under the pressure preservation process of the die, the workpiece has extremely small deformation and the dimension precision of the punching part can be excellently ensured.

A loop-type heat exchange device (10) is disclosed, which includes an evaporator (20), a condenser (40), a vapor conduit (30) and a liquid conduit (50). The evaporator contains therein a working fluid. The working fluid in the evaporator evaporates into vapor after absorbing heat, and the generated vapor flows, via the vapor conduit, to the condenser where the vapor releases its latent heat of evaporation and is condensed into condensate. The condensate then returns back, via the liquid conduit, to the evaporator to thereby form a heat transfer loop. The condenser defines therein a chamber, and a plurality of heat-exchange pins is provided inside the chamber for effectively exchanging heat with the vapor entering into the condenser.

A heat management system for a high pressure gas tank comprising a loop circulation path for the gas including a path through an internal heat exchanger in the tank and a path through a heat exchanger external to the tank, wherein, in the instance of refueling, the refueling gas circulates multiple times in the loop through the internal heat exchanger and the external heat exchanger and in the course of circulation, a portion of the gas from the refuel line is introduced into the tank. In a reverse circulation during driving, the tank is warmed by heat exchange from the external heat exchanger to the internal heat exchanger.

A heat exchanger having excellent heat exchanging performance is obtainable by a simple production technique and at a low cost. This is achieved by providing a fin member and by increasing heat conductivity between the fin member and a meandering pipe body. Further, the heat exchanger is made compact for high degrees of layout freedom, enabling the heat exchanger to be installed in a tight space. Engagement grooves are provided in both end surfaces, which are opposite to each other, of a fin member in which fins are parallel arranged. Straight pipe sections are parallelly arranged, with gaps in between, in the engagement grooves of the fin member. The straight pipe sections a are connected at bent sections. A pair of meandering sections is arranged opposite to each other with an insertion gap of the fin member in between. On of the meandering sections and the other meandering section are connected by a connection pipe to form a meandering pipe main body. The straight pipe sections of the one meandering section are arranged in the engagement grooves in the one end surface of the fin member inserted and arranged in the insertion gap between the one meandering section and the other meandering section of the meandering pipe body, and the straight pipe sections of the other meandering section are arranged and fixed in the engagement grooves in the other end surface.

A heat exchanger (1) includes: a heat sink (3) which is in contact with a heating element (2); and an electron emitting element (4) which is provided so as to be separated from the heat sink (3) by a space and which provides electrons to the heat sink (3) via air in the space. The electron emitting element (4) includes: an electrode substrate (7); a thin-film electrode (9); a power supply (10) which applies a voltage between the electrode substrate (7) and the thin-film electrode (8); and an electron acceleration layer (8) which accelerates the electrons inside itself in response to the voltage applied by the power supply (10) so that the electrons are emitted from the thin-film electrode (9). The electron acceleration layer (8) is made at least partially of an insulating material. As a result, the heat exchanger (1) has a heat exchange capability which can be maintained and improved independently of a structure in which electric field concentration tends to occur.

Even in the case where an additional heat exchanger must be arranged at the downstream side in the air flow direction of a multiple heat exchanger, a high flow-rate of air can be supplied to the additional heat exchanger arranged at the downstream side. In a state in which a reinforcement plate 3d of an outdoor heat exchanger 3 and a reinforcement plate 2d of a first radiator 2 come next to and overlap each other in series in the cooling air flow direction, both the reinforcement plates 2d and 3d are joined with a bolt 5. Due to this, a distance h between a first heat exchange core 2c and a second heat exchange core 3c is reduced. Therefore, air for cooling can be supplied, at a high flow-rate, to a second radiator 3 arranged at the downstream side.

A loop-type heat exchange device (10) is disclosed, which includes an evaporator (20), a condenser (40), a vapor conduit (30) and a liquid conduit (50). The evaporator contains therein a working fluid. The working fluid in the evaporator evaporates into vapor after absorbing heat, and the generated vapor flows, via the vapor conduit, to the condenser where the vapor releases its latent heat of evaporation and is condensed into condensate. The condensate then returns back, via the liquid conduit, to the evaporator to thereby form a heat transfer loop. The condenser defines therein a chamber, and a plurality of heat-exchange pins is provided inside the chamber for effectively exchanging heat with the vapor entering into the condenser.

Provided are a distributor having a distribution tube having an inner surface formed as a curved surface, a plurality of distribution holes which are formed in a lower semicircular region of the distribution tube with respect to a horizontal line of the distribution tube and are arranged to be symmetrical about a vertical line of the distribution tube and a connection hole provided in the distribution tube so that the distribution tube is connected to a connection tube, an evaporator and a refrigerating machine with the distributor. A perforated plate may be fixed to an inside of the distribution tube so as to block a flow path of a cooling medium. The distributor is capable of forming a stable flow and a steady circulation while a cooling medium flows from a condenser into an evaporator and a steady circulation are formed and spread uniformly and supplied tp the evaporator.

A heat exchanger 1 has header tanks 2, 3 each comprising a header forming plate 7, a tube connecting plate 8 and an intermediate plate 9 interposed between these two plates 7, 8, the plates 7, 8, 9 being arranged in superposed layers and brazed to one another. Each of the plates 7, 8, 9 is made from a metal plate by press work. The header forming plate 7 has outward bulging portions 11A, 11B or an outward bulging portion 24. The tube connecting plate 8 has tube insertion holes 18. The intermediate plate 9 has communication holes 22 for causing tube insertion holes 18 to communicate with the interior of each outward bulging portion 11A, 11B or 24 therethrough. Heat exchange tubes 4 have opposite ends placed into the respective insertion holes 18 and brazed to the respective tube connecting plates 8. The heat exchanger comprising such header tanks 2, 3 is reduced in the number of components, can be fabricated with a high work efficiency and exhibits improved heat exchange performance.

The invention discloses an on-line intelligent network automatic water treatment detection and control system which comprises a control center platform, a main board, a sensor, a pollution discharge, water replenishing and dosing device, an alarm module, a display screen, a computer and an intelligent mobile phone, wherein the output port of the sensor is connected with the input end of the main board, the output port of the main board is connected with the input end of the pollution discharge, water replenishing and dosing device, the output end of the main board is respectively connected with the display screen and the alarm module, the output end of the main board is connected with the computer or the intelligent mobile phone through the Internet or GPRS network, the main board and the control center platform are in bilateral interaction, and the control center platform and the intelligent mobile phone are in bilateral interaction. According to the invention, the sensor is used for detecting water quality data, and the opening and closing of the pollution discharge, water replenishing and dosing device are remotely controlled through the Internet, so that the electricity, water and chemical agents are furthest saved, the service life of an air conditioner is prolonged, the running cost of the air conditioner is lowered, and the environmental pollution is reduced.

The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction preferably carried out in gaseous phase in the presence of a suitable catalyst.

A heat pump device 20 includes an air conditioning control device 22 configured to switch the heat pump device 20 among a plurality of operation modes including an air-heating operation mode in which an indoor heat exchanger 32 serves as a radiator and an outdoor heat exchanger 33 serves as a heat absorber, and an air-cooling operation mode in which the indoor heat exchanger 32 serves as a heat absorber and the outdoor heat exchanger 33 serves as a radiator. The air conditioning control device 22 switch a refrigerant pipe such that refrigerant is, in the air-cooling operation mode, supplied to part of the outdoor heat exchanger 33 serving as a refrigerant inlet in the air-heating operation mode.

A hollow passage in a machine element for enhancing the heat exchanging properties between the machine element and a fluid flowing through the hollow passage; the hollow passage including a helicoidal groove. In some embodiments, the machine element comprises a heated machine element and the fluid comprises a coolant. In some embodiments, the machine element comprises a stator blade or a rotor blade of a gas turbine engine and the coolant comprises compressed air. In some embodiments, the helicoidal groove comprises a depression in an outer wall of the hollow passage that extends axially along the hollow passage to form a helicoidal or swirling path.

A corrugate fin 14 of an evaporator 1 includes wave crest portions 14a, wave trough portions 14b, and flat connection portions 14c connecting together the wave crest portions 14a and the wave trough portions 14b. Opposite end portions of a cutout 95 extend to corresponding connection portions 14c located at opposite ends of the wave crest portion 14a and the wave trough portion 14b. A projection 96 projecting inward is formed integrally with end portions of the connection portions 14c, the end portions of the connection portions 14c corresponding to opposite ends of the cutout 95. The projection 96 is formed in such a manner as to extend between the end portions of the connection portions 14c located at the opposite ends of the wave crest portion 14a and the wave trough portion 14c. The projection 96 projects inward in a shape resembling a lying letter V. The evaporator 1 exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof.

The invention provides a heat pump-type hot-water supply device which includes a heat source-side heat pump unit having a radiation heat exchanger for radiating heat from refrigerant by condensing therefrigerant. The hot-water supply device further includes a hot-water supply unit having a water tank where water is contained, water supply piping for supplying external water into the water tank, water circulation piping communicating with both a bottom section and an upper section of the water tank and circulating water in the bottom section to the upper section of the water tank in a bypassing manner, an absorption heat exchanger located in the middle of the water circulation piping and joined to the radiation heat exchanger of the heat source-side heat pump unit such that the absorptionheat exchanger can absorb heat, and a hot-water supply unit for supplying hot water in the upper section of the water tank to the outside. The water supply piping is branched off into a first water supply route and a second water supply route. The first water supply route supplies, without treatment, the water supplied from the outside into the water tank, and the second water supply route supplies the water from the outside into the water tank after improving the quality of the water by a water quality adjustment unit so that the water does not produce scale. Either or both of the water supply routes are used appropriately depending on the quality of water supplied. As a result, scale deposition is suppressed.

A heat exchanger includes: a receiving tube into which a fluid is introduced; a discharge tube for discharging a heat-exchanged fluid outwardly; a plurality of pins disposed between the receiving tube and the discharge tube, being bent at regular intervals so that air can pass at an outer circumferential surface thereof, and having a guide unit for guiding condensate water condensed at the surface thereof in one direction; and a tube disposed between the pins for heat-exchanging between a fluid passing therethrough and air passing the outer circumferential surface of the pin, and having a condensate water discharge path for discharging downwardly the condensate water guided by the guide unit. A condensate water remaining phenomenon between the pins can be reduced, and thus, the heat exchanging performance is improved.

An evaporator 1 includes a plurality of refrigerant flow members 13 and corrugate fins 14 disposed in corresponding air-passing clearances between the adjacent refrigerant flow members 13. Each refrigerant flow member 13 includes a plurality of flat tubes 12 arranged in the front-rear direction. Each corrugate fin 14 is disposed to extend across all the flat tubes 12. A vertically extending drain portion 30 is formed between the flat tubes 12 adjacent each other in the front-rear direction. At each connection portion of the corrugate fin 14, a louver group 95A composed of a plurality of louvers 94A inclining downward toward the front is provided to correspond to a front portion of each flat tube 12. At least the front-end louver 94A of the louver group 95A provided to correspond to the front portion of each flat tube 12 except for the flat tube 12 at the front end is located in the drain portion 30. This evaporator exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof.

The disclosed serpentine heat exchanger for an air conditioner effectively minimizes losses in heat-exchange performance due to condensation and is capable of adequately accommodating efforts to reduce the size of air conditioners. Said serpentine heat exchanger (10) comprises a plurality of fin groups (14) and a heat-exchanger pipe (16). Each fin group (14) is formed by arranging a large number of fins (12), each comprising a metal plate with a prescribed coating layer formed on at least one surface, parallel to each other at intervals of 0.6-5.0 mm in a direction (y direction) perpendicular to the direction (x direction) in which a heat-exchange fluid, namely air, flows. The plurality of fin groups (14) are arranged in a row at a constant distance from each other in a direction (z direction) perpendicular to the x direction and the y direction. The heat-exchanger pipe (16) is laid out in a serpentine configuration so as to penetrate each fin group (14) in turn.

The invention discloses an electrophoresis apparatus and process suitable for an automobile leaf spring. Ball-blasted reeds are subjected to degreasing, parkerizing, water washing and other pretreatments through a conveying chain, then enter an electrophoresis trough, are automatically dried, subjected to strong cold and cooled down after electrophoresis and are finally off-line; the reeds are assembled into a leaf spring assembly after electrophoresis, and the assembly is subject to surface paint spraying through an electrostatic painting line so as to meet the requirements on product corrosion protection and surface colors of clients. The invention overcomes the shortcomings of a conventional leaf spring coating technology, and creates a brand-new leaf spring coating technology-the process route and production equipment adopting leaf spring uniwafer electrophoresis plus assembly surface painting. The process saves energy and labor, achieves high utilization ratio of paint, enables the salt fog resisting capability of the leaf spring to be higher than 300 h, and simultaneously improves and prolongs the surface quality and the service life of the reeds.

In a composite-type heat exchanger capable of exchanging heat among three types of fluids, an outside air passage is provided in a periphery of refrigerant tubes and coolant tubes, and the outside air passage includes outer fins that promote heat exchange among a refrigerant, an outside air and a coolant. The outer fins include refrigerant side heat connecting portions configured to thermally connect the refrigerant tubes, and coolant side heat connecting portions configured to thermally connect the refrigerant tubes and the coolant tubes. In a first core portion including most downstream refrigerant tubes which constitute a final path, which is the most downstream side path in a direction of the refrigerant flow, the refrigerant side heat connecting portions is larger in number than the coolant side heat connecting portions.

The invention discloses a processing method of an octahedral lattice structure and a derivative topological configuration lattice structure of the octahedral lattice structure. The processing method comprises the following steps that an in-plane truss and an out-of-plane truss are manufactured, the in-plane truss and the out-of-plane truss are assembled in an embedded mode through a bayonet embedding method, an 'octahedral core-octahedron' multi-layer configuration lattice structure is assembled, and an 'octahedral core-octahedral core' multi-layer configuration lattice structure is assembled.The designed 'octahedral core-octahedron' multi-layer configuration light lattice structure and the derivative lattice structure thereof have the high specific strength, the high specific stiffness and the high energy absorption property, in addition, the 'octahedral core-octahedron' multi-layer configuration lattice structure and the derivative octahedral base lattice structure thereof can alsobe widely applied to the civilian field, severs as a novel building plate and decoration / ornament plate, and used as structural load-bearing parts in the building filed, furniture and home building materials and decoration consumables, the specific stiffness and the specific strength of final products can be improved, and meanwhile, the demands of a user for product attractiveness can further be met.

An integrated window type air conditioner comprises an indoor panel, a case, an evaporator, an indoor fan, a condenser, an outdoor fan, a compressor and a chassis, wherein the chassis of the air conditioner is stepped; the outdoor side part of the air conditioner forms a space structure lower than the indoor side part; the outdoor fan of the air conditioner is a cross-flow fan axially parallel with the chassis; a guide volute for guiding the air to flow is arranged around the outdoor fan; the condenser is arranged at the air inlet of the guide volute and covers the air inlet of the guide volute; a motor fan simultaneously provides power to the indoor fan and the outdoor fan for rotation; and the top of the case on the outdoor side part adopts the roof structure inclining downwards. Expansion of the air inlet and outlet areas of the outdoor fan reduces the noises generated when the outdoor side of the air conditioner operates, and the possibility of mutual interference between the inlet air flow and the outlet air flow is reduced, thus improving the heat exchange capability of the condenser.

The invention relates to a silicon carbide micro-channel heat dissipation structure of a three-dimensional integrated circuit and a manufacturing method thereof, and mainly solves the problem that a micro-channel wall material is low in heat conductivity and small in contact area with the micro-channel wall in the prior art. The silicon carbide micro-channel heat dissipation structure comprises an upper chip (1) and a lower chip (2), wherein each chip comprises a circuit layer (3), a silicon substrate (4), a silicon channel wall (5), a silicon carbide channel wall (6), a micro-channel (7) and a silicon micro-channel cap (8) from top to bottom, wherein each circuit layer is positioned on the top of the front side of the corresponding chip, and each silicon substrate is adjacent to the corresponding circuit layer and is positioned below the corresponding circuit layer; each silicon channel wall is adjacent to the corresponding silicon substrate and is positioned below the corresponding silicon substrate; each silicon carbide channel wall epitaxially grows below the corresponding silicon channel wall; the cross section of each micro-channel is of an integral structure with a semi-elliptical upper part and a rectangular lower part, and each micro-channel is positioned below the corresponding silicon channel wall. The heat dissipation contact area close to the circuit layers is increased, the distances with the circuit layers are shortened, and the heat dissipation performance of the micro-channel heat dissipation structure is improved.

The invention relates to a cabinet type air conditioner, in particular to an air supply structure inside the cabinet type air conditioner. The cabinet type air conditioner comprises a cabinet body, a heat exchanger, an air exhaust device and a motor for driving the air exhaust device, wherein the heat exchanger and the air exhaust device are arranged in the cabinet body; an air inlet and an air outlet are formed in the positions, corresponding to the heat exchanger and the air exhaust device respectively, of the cabinet body; a filter screen is arranged between the heat exchanger and the air inlet; the heat exchanger is columnar and longitudinally mounted in the cabinet body; the air exhaust device and the heat exchanger are placed in the coaxial line; the air inlet is formed in the side edge of the heat exchanger; and one end of the air exhaust device is close to the heat exchanger, and the other end of the air exhaust device corresponds to the air outlet. With the adoption of the cabinet type air conditioner, the size of the air conditioner can be reduced, the modelling expansibility of the cabinet type air conditioner is improved, and the heat exchange effect is enhanced.

The invention discloses a controlling method of an air condition which includes the compressor, the room heat exchanger, the room fan and the controlling device. The character is in that: the electrical heater is set on the upper side of the room heat exchanger. The controlling method includes at least the follow processes: heating, the electrical heater heats and dries the room heat exchanger; mix, the mixing wind circles in the room machine; heat rejection, discharge the hot wind out of the room machine. After the air condition refrigerating or sucking the humid, the invention uses the linkage of the electrical heater, the room fan and up-down fans. It not needs to start the compressor but can do the drying operation to make the evaporator dry and move the dirty of the fan surface to inhibit the bacterium growth in evaporator surface. So it can improve the heat exchanging effect and prolong the using life.

An object of the present invention is to improve a heat exchanging capability in an evaporator in a refrigerant cycle system in which a high pressure side is operated at a supercritical pressure. The refrigerant cycle system is a refrigerant cycle system in which a compressor, a gas cooler, an expansion valve and an evaporator are sequentially connected in a cyclic form and a high pressure side is operated at a supercritical pressure, wherein the degree of opening of the expansion valve is adjusted based on the temperature and pressure of a refrigerant at an outlet of the evaporator so as to control the degree of superheat at the outlet of the evaporator. An abstract of the present invention is to make large the degree of superheat at the outlet of the evaporator by means of the expansion valve.

A gas cooling device capable of efficiently cooling a gas such as an EGR gas, etc. is provided. A multiplicity of cooling pipes perpendicularly intersecting a gas flow direction in a gas pipe for a gas such as an EGR gas, etc. are provided to extend through an outer peripheral wall of the gas pipe, a cooling jacket is provided on an outer surface of the gas pipe on both sides of a group of the cooling medium pipes in an axial direction, or on the entire outer surface of the gas pipe, and the gas in the gas pipe is cooled by a cooling medium flowing through the cooling pipes.